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    <title>Document</title>
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    <script type="text/javascript">
        document.write(`Math.E:`+Math.E+"<br>");    
        document.write(`Math.PI:`+Math.PI+"<br>");     
        document.write(`Math.SQRT2:`+Math.SQRT2+"<br>");
        document.write(`Math.LN2:`+Math.LN2+"<br>");  
        document.write(`Math.LN10:`+Math.LN10+"<br>");    
        document.write(`Math.LOG2E:`+Math.LOG2E+"<br>");    
        document.write(`Math.Log10E:`+Math.Log10E+"<br>");
        document.write(`Math.abs(-4.7):`+Math.abs(-4.7)+"<br>");
        document.write(`Math.sqrt(64):`+Math.sqrt(64)+"<br>");
        document.write(`Math.pow(8, 2):`+Math.pow(8, 2)+"<br>");
        document.write(`Math.round(6.8):`+Math.round(6.8)+"<br>");
        document.write(`Math.round(2.3):`+Math.round(2.3)+"<br>");
        document.write(`Math.ceil(6.4):`+Math.ceil(6.4)+"<br>");
        document.write(`Math.floor(2.7):`+Math.floor(2.7)+"<br>");
        document.write(`Math.sin(90*Math.PI/180):`+Math.sin(90*Math.PI/180)+"<br>");
        //Math.E:
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